CN100366983C - Air out device used for forming air curtain - Google Patents
Air out device used for forming air curtain Download PDFInfo
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- CN100366983C CN100366983C CNB2006100489155A CN200610048915A CN100366983C CN 100366983 C CN100366983 C CN 100366983C CN B2006100489155 A CNB2006100489155 A CN B2006100489155A CN 200610048915 A CN200610048915 A CN 200610048915A CN 100366983 C CN100366983 C CN 100366983C
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Abstract
The present invention discloses an air outlet device for forming an air curtain, which comprises a blower and an air pipe of an air curtain, the cross section of a pipe cavity of the air pipe of an air curtain has a narrow opening and is in a circular shape, the narrow opening place is provided with a straight air guiding passage which outwards extends along a radial direction, and thereby, a narrow strip-shaped air outlet in an axial direction is formed at the air pipe of an air curtain. The present invention is characterized in that the diameter D of the pipe cavity of the air pipe of an air curtain, the length L of the pipe cavity, the height H of the strip-shaped air outlet, and the opening width delta of the strip-shaped air outlet meet the formula: UI=[1-(n+0.05)(n)/n(n)(n+1)[3n+1/2 pai(2n+1)](n)a(2n+1)b(n)c](1/n)*100%>/=95%, in the formula, UI is the index of the flow uniformity, n is the non-newton index and is equal to 1, a = 2 delta/D, b=L/D, and c=L/2H. the long, thin and flat high-velocity airflow can be obtained in the length direction of the air pipe of an air curtain, and the present invention has the advantages of uniform outlet air, low noise and higher flow efficiency; the present invention can be used as the basis of serialized design, the air curtains of different lengths and different air quantities are formed, and the present invention is suitable for occasions of different requirements.
Description
Technical Field
The invention relates to an air outlet device for forming an air curtain.
Background
At present, various air curtain devices are more and more widely applied. For example, the device is used for the refrigeration house, the kitchen oil smoke removal, the food and medicine production occasions and the like.
In recent years, with the improvement of living standard of people, the requirement on the environmental quality of living rooms is higher and higher, and for Chinese families, the problem of oil smoke exhaust of kitchens is always a big difficulty. Therefore, in the kitchen equipment for Chinese cooking, the requirement on the purification performance of the range hood is most important, and the requirement is the premise and guarantee of realizing all requirements of beauty, cleanness, comfort, health, convenience and the like of the kitchen and even the whole living room.
The range hood which uses combustion as a heat source and is matched with the combustion needs to be discharged in an outward mode, and waste gas generated by combustion cannot be purified and circulated. In order to improve the oil fume exhaust effect of the range hood, the suction force of the range hood is generally increased continuously at present so as to strengthen the smoke exhaust. However, such a solution would cause many problems such as large energy consumption, large noise, high cost, etc., and if the range hood is used in a room with strong air tightness, for example, in winter, negative pressure would be formed in the room when the range hood works, and the effect of simply increasing the smoke exhaust power is not obvious.
Under the background, a solution of arranging an air curtain device on a cooking bench or a range hood is provided, and the air curtain device generates an air curtain, so that the oil smoke is effectively prevented from escaping, and the oil smoke exhaust effect is improved. A good air curtain device should have a suitable air speed, uniform outlet air, low noise, low power consumption, good blocking capability, low implementation cost, etc. The existing air curtain device has shortcomings in these aspects, and especially the uniformity of the outlet air is yet to be improved. If the uniformity of the outlet air has a problem, the adverse effect is all-round. In the whole air curtain device, the key component for determining the uniformity of the outlet air is the outlet air pipe, so that intensive research on the outlet air pipe is necessary.
Disclosure of Invention
The invention aims to solve the technical problem of developing an air outlet device for forming an air curtain with uniform air outlet.
The technical scheme adopted by the invention for solving the technical problems is as follows: this an air-out device for forming air curtain, it includes air-blower and air curtain tuber pipe, the air intake of air curtain tuber pipe communicates with each other with the air outlet of air-blower, the cross section of the lumen of air curtain tuber pipe is circular for having narrow open-ended, this narrow opening part is equipped with straight wind-guiding passageway along radial outside extension, thereby form axial long and narrow rectangular air outlet on the air curtain tuber pipe, or further set up the recess at the tip of wind-guiding passageway, inlay the dress in the recess and adorn the long and narrow wind-guiding mouth unanimous with wind-guiding passageway opening width, thereby form axial long and narrow rectangular air outlet on the air curtain tuber pipe jointly by wind-guiding passageway and this wind-guiding mouth, its characterized in that satisfy between the lumen diameter D of air curtain tuber pipe, lumen length L, the height H of bar air outlet and the opening width delta of bar air outlet:
in the formula, UI is an airflow uniformity index; n is a non-Newtonian index and is taken as 1; a =2 δ/D, b = L/D, c = L/2H.
The device is optimally designed by combining the relevant theories of aerodynamics and hydromechanics, and is researched and developed on the basis of repeated tests, so that a brand new structure capable of forming a uniform air curtain is formed. After the air source generated by the blower is introduced into the air curtain duct, the airflow is rectified in the duct and then flows out of the device after further flow stabilization through the strip-shaped air outlet. According to the above formula, the pressure of the air flow before entering the slit-shaped strip-shaped air outlet is a complex function related to the geometric dimensions (D, L, δ, H) of the cavity, that is, the air outlet device structurally satisfying the UI value of greater than or equal to 95% can obtain a high-speed air flow which is long, thin, flat and uniform in the length direction of the air curtain duct. The degree of influence of each parameter is defined by a parameter a (= 2 δ/D) being maximum, b (= L/D) being middle, and c (= L/2H) being minimum.
In order to make the air curtain air-out device have the best air flow performance, the diameter D of the pipe cavity of the air curtain air pipe, the length L of the pipe cavity, the height H of the strip-shaped air outlet and the opening width delta of the strip-shaped air outlet further satisfy the following conditions:
wherein mu is a flow coefficient,
the air inlet of the air curtain air pipe is arranged in the middle of the air curtain air pipe, and the center perpendicular line of the plane where the opening part of the air inlet is located is perpendicular to and intersected with the plane where the air guide channel is located.
And smooth curve transition is formed between the opening of the air curtain air pipe and the air guide channel.
The blower is preferably a direct current blower. The direct current blower is used for generating an air curtain air source and has the characteristics of small volume, light weight, high air quantity and high air pressure.
The generated air curtain is uniform and has higher flow efficiency.
In order to facilitate manufacturing and fully consider requirements of manufacturability and assembly, the device is structurally designed for application to a domestic European-style range hood. When the range hood works, the U-shaped three-side air curtain is generated on the front, left and right sides of the bottom surface of the fume collecting hood to prevent the fume from escaping to the outer side of the fume collecting hood and ensure that the fume is sucked and discharged out of a room to the maximum extent. Wherein the wind speed difference of each segment of the wind curtain in the length direction is not more than 0.5m/s, and the noise level of the whole machine is not more than 60dB (sound pressure level). The three-side air curtain forms an invisible barrier between people and oil smoke, so that the harm to health caused by the fact that oil smoke stimulating gas is inhaled by human bodies when escaping is avoided. In addition, an air purifying and sterilizing device such as an anion generator can be additionally arranged on the air curtain, so that the generated air curtain contains air purifying components such as anions, and the air curtain can effectively purify air and is beneficial to human bodies. The air conditioner has the advantages of simple structure, low cost, good processability and manufacturability, uniform air outlet, good matching property with a fan and capability of realizing serial production of different specifications and sizes.
It should be understood by those skilled in the art that the specific structure of the air curtain duct can be adjusted according to different products and applications, while the design parameters of the air curtain duct are optimized according to the length L, the diameter D (i.e. the equivalent area of the cross section), the height H of the strip-shaped air outlet and the opening width δ of the strip-shaped air outlet.
Compared with the prior art, the invention has the advantages that: 1. the air curtain air pipe can obtain long, thin and flat high-speed airflow in the length direction of the air curtain air pipe, and has the advantages of uniform air outlet, low noise and higher flowing efficiency; 2. the method is convenient to further serve as the basis of serial design and budget according to the requirements of structural design; 3. the air curtain with different lengths and air quantity requirements can be formed by conveniently carrying out the serialized design, and is suitable for occasions with different requirements; 4. the miniature direct current blower is used as a wind source of the wind curtain, and has the characteristics of small volume, light weight, high wind quantity and high wind pressure.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an air curtain duct according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of another air curtain duct of an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of the curtain duct of FIG. 3 in an unassembled state;
fig. 5 is a simplified perspective view of an air curtain duct according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 5, the preferred embodiment of the present invention is shown. As shown in fig. 1, the air outlet device for forming an air curtain in this embodiment is applied to a household european range hood, so that when the range hood works, an air curtain is generated on the bottom surface of the fume collecting hood. The air-conditioning system comprises a micro direct-current blower 1 and an air curtain air pipe 2, wherein an air outlet of the micro direct-current blower 1 is communicated with an air inlet 3 of the air curtain air pipe 2 through an air pipe joint 4 and a transition hose 5.
As can be seen from fig. 2, the cross section of the tube cavity 6 of the air curtain air pipe 2 shown in fig. 2 is circular with a narrow opening, the narrow opening is provided with a straight air guiding channel 7 extending radially outwards, so that an axial long and narrow strip-shaped air outlet 8 is formed on the air curtain air pipe 2, the opening of the air curtain air pipe 2 and the air guiding channel 7 are in smooth curve transition, the air inlet 3 of the air curtain air pipe 2 is opened in the middle of the air curtain air pipe 2, and the central vertical line of the plane where the opening of the air inlet 3 is located is vertically intersected with the plane where the air guiding channel 7 is located.
As can be seen from fig. 3 and 4, the air curtain duct 2 shown in fig. 3 and 4 differs from the air curtain duct 2 shown in fig. 2 only in that: a groove 9 is further formed in the end portion of the air guide channel 7, a long and narrow air guide opening 10 which is consistent with the opening width of the air guide channel 7 is embedded in the groove 9, and therefore the air guide channel 7 and the air guide opening 10 jointly form an axial long and narrow air outlet 8 on the air curtain air pipe 2.
The structure of the air curtain duct 2 may be the structure shown in fig. 2 or the structure shown in fig. 3, but the structure shown in fig. 3 has a characteristic of relatively simple manufacturing process compared to the structure shown in fig. 2, and in addition, because the mouth of the strip-shaped air outlet 8 is generally exposed in the use state, the structure shown in fig. 3 is relatively easier to make the part of the strip-shaped air outlet 8 exposed outside more beautiful.
In addition, a negative ion generator 11 is also installed in the air curtain duct 2.
The following table shows that on the premise of meeting the above basic structure, for three specific embodiments provided by the tube cavity diameter D of the air curtain air pipe 2, the tube cavity length L, the height H of the strip-shaped air outlet 8 and the opening width δ of the strip-shaped air outlet 8 (see fig. 5), through actual detection, the air speed difference of the air outlet air curtain in the length direction of the air curtain air pipe 8 is not more than 0.5m/s, and the noise of the whole machine is not more than 60dB (sound pressure level).
Claims (10)
1. The utility model provides an air-out device for forming air curtain, its includes air-blower and air curtain tuber pipe, and the air intake of air curtain tuber pipe communicates with each other with the air outlet of air-blower, and the cross section of the lumen of air curtain tuber pipe is circular for having narrow open-ended, and this narrow opening department is equipped with straight wind-guiding passageway along radially outwards extending to form axial rectangular shape air outlet on the air curtain tuber pipe, its characterized in that satisfy between the opening width delta of the high H of lumen diameter D, lumen length L, bar air outlet of air curtain tuber pipe and bar air outlet:
in the formula, UI is an airflow uniformity index; n is a non-Newtonian index and is taken as 1; a =2 δ/D, b = L/D, c = L/2H.
2. The air outlet device for forming the air curtain according to claim 1, wherein the diameter D of the tube cavity of the air curtain duct, the length L of the tube cavity, the height H of the strip-shaped air outlet and the width δ of the opening of the strip-shaped air outlet further satisfy the following relationship:
wherein mu is a flow coefficient,
3. the air outlet device for forming the air curtain as claimed in claim 1 or 2, wherein the air inlet of the air curtain duct is formed in a middle portion of the air curtain duct, and a central perpendicular line of a plane where an opening portion of the air inlet is located is perpendicular to a plane where the air guiding channel is located.
4. The wind outlet device for forming the wind curtain as claimed in claim 1 or 2, wherein the narrow opening of the wind curtain pipe is in smooth curve transition with the wind guide channel.
5. The wind outlet device for forming an air curtain according to claim 1 or 2, wherein the blower is a dc blower.
6. The utility model provides an air-out device for forming air curtain, it includes air-blower and air curtain tuber pipe, the air intake of air curtain tuber pipe communicates with each other with the air outlet of air-blower, the cross section of the lumen of air curtain tuber pipe is circular for having narrow open-ended, this narrow opening department is equipped with straight wind-guiding passageway along radially outwards extending, the tip of wind-guiding passageway is seted up flutedly, inlay the dress in the recess and wind-guiding passageway opening width unanimous long and narrow wind-guiding mouth, thereby form axial long and narrow rectangular air outlet by wind-guiding passageway and this wind-guiding mouth jointly on the air curtain tuber pipe, a serial communication port satisfy between the lumen diameter D of air curtain tuber pipe, lumen length L, the height H of bar air outlet and the opening width delta of bar air outlet:
UI is an airflow uniformity index; n is a non-Newtonian index and is taken as 1; a =2 δ/D, b = L/D, c = L/2H.
7. The air outlet device for forming the air curtain according to claim 6, wherein the diameter D of the tube cavity of the air curtain air pipe, the length L of the tube cavity, the height H of the strip-shaped air outlet and the opening width δ of the strip-shaped air outlet further satisfy the following conditions:
where μ is the flow coefficient and,
8. the air outlet device for forming the air curtain as claimed in claim 6 or 7, wherein the air inlet of the air curtain duct is formed in the middle of the air curtain duct, and a central perpendicular line of a plane where an opening of the air inlet is formed is vertically intersected with a plane where the air guide channel is formed.
9. The air outlet device for forming the air curtain as claimed in claim 6 or 7, wherein a smooth curve transition is formed between the narrow opening of the air curtain duct and the air guiding channel.
10. The wind outlet device for forming an air curtain according to claim 6 or 7, wherein said blower is a dc blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100489155A CN100366983C (en) | 2006-01-01 | 2006-01-01 | Air out device used for forming air curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100489155A CN100366983C (en) | 2006-01-01 | 2006-01-01 | Air out device used for forming air curtain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1793742A CN1793742A (en) | 2006-06-28 |
| CN100366983C true CN100366983C (en) | 2008-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100489155A Active CN100366983C (en) | 2006-01-01 | 2006-01-01 | Air out device used for forming air curtain |
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| CN (1) | CN100366983C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490067B (en) * | 2017-08-25 | 2022-11-15 | 珠海凌达压缩机有限公司 | Indoor unit and air conditioning system |
| WO2022039770A1 (en) * | 2020-08-19 | 2022-02-24 | Itt Manufacturing Enterprises Llc | Air safety systems |
| CN112121967A (en) * | 2020-10-13 | 2020-12-25 | 英鸿纳米科技股份有限公司 | Cooling equipment of special low-temperature crushing system for preparing nanoscale materials |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60245A (en) * | 1983-06-16 | 1985-01-05 | Nippon Air Curtain Kk | Air straightening device for air curtain |
| US4606259A (en) * | 1984-08-07 | 1986-08-19 | Flakt Aktiebolag | Air curtain |
| CN2303203Y (en) * | 1997-02-17 | 1999-01-06 | 李惠军 | Air-curtain jetting pipeline having cavity |
| CN2363212Y (en) * | 1999-01-23 | 2000-02-09 | 张磊 | Cooking fume separation exhauster with air curtain |
| CN2498520Y (en) * | 2001-09-03 | 2002-07-03 | 潘荣标 | Cooker hood with air curtain |
| CN2566147Y (en) * | 2002-06-06 | 2003-08-13 | 严振华 | Air curtain type oil-fume exhauster |
| CN2861844Y (en) * | 2006-01-01 | 2007-01-24 | 宁波方太厨具有限公司 | Air-out apparatus for forming air curtain |
-
2006
- 2006-01-01 CN CNB2006100489155A patent/CN100366983C/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60245A (en) * | 1983-06-16 | 1985-01-05 | Nippon Air Curtain Kk | Air straightening device for air curtain |
| US4606259A (en) * | 1984-08-07 | 1986-08-19 | Flakt Aktiebolag | Air curtain |
| CN2303203Y (en) * | 1997-02-17 | 1999-01-06 | 李惠军 | Air-curtain jetting pipeline having cavity |
| CN2363212Y (en) * | 1999-01-23 | 2000-02-09 | 张磊 | Cooking fume separation exhauster with air curtain |
| CN2498520Y (en) * | 2001-09-03 | 2002-07-03 | 潘荣标 | Cooker hood with air curtain |
| CN2566147Y (en) * | 2002-06-06 | 2003-08-13 | 严振华 | Air curtain type oil-fume exhauster |
| CN2861844Y (en) * | 2006-01-01 | 2007-01-24 | 宁波方太厨具有限公司 | Air-out apparatus for forming air curtain |
Non-Patent Citations (2)
| Title |
|---|
| 一种气幕式排风罩性能参数优化的研究. 贺素艳，王英敏，苏涛.暖通空调，第30卷第5期. 2000 * |
| 用均匀送风风幕替代局部排气的实践. 曹新民.通风除尘，第1996年第1期. 1996 * |
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| CN1793742A (en) | 2006-06-28 |
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